Cisco Systems 3600 Series manual Obtaining Documentation, Using the xmodem Command, Cisco.com

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Recovering Compact Flash Memory and System Images

Recovering Compact Flash Memory and System Images

If you have increased system compact flash memory or reduced DRAM or SDRAM in a Cisco 3700 series router, you might need to reload the Cisco IOS image, using the xmodem command in ROM monitor mode. To use this command, the computer attached to your console must have a terminal emulator that has xmodem capability.

For complete information about ROM monitor commands, refer to Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers, available online at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/index.htm

Using the xmodem Command

If the system image is erased from compact flash memory, the xmodem command establishes a connection between a console and the router console or auxiliary port for disaster recovery.

xmodem [filename]—Establishes an xmodem connection between the console and the router. The optional argument filename specifies the source file containing the Cisco IOS image.

Other options are:

-c—Use cyclic redundancy check (CRC-16).

-y—Use Ymodem transfer protocol.

-r—Copy the image to DRAM for launch.

-x—Do not launch image on completion of download.

Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Upgrading System Memory in Cisco 3700 Series Routers

 

OL-5423-02

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Contents Upgrading System Memory in Cisco 3700 Series Routers Dram Memory CapacitiesDynamic Memory Memory ConfigurationsCompact Flash Memory Safety RecommendationsWaarschuwing Belangrijke Veiligheidsinstructies Safety WarningsWarnung Wichtige Sicherheitsanweisungen OBS! Spara Dessa Anvisningar OL-5423-02 Safety with Electricity Tools and Equipment Needed Upgrading System Memory in Cisco 3725 RoutersPreventing Electrostatic Discharge Damage Removing the Cisco 3725 Router Cover Sdram Dimm Location and Orientation Replacing Cisco 3725 SdramSdramm Dimm Locations in the Cisco 3725 Router Removing Sdram DIMMsProceed to the Installing Sdram DIMMs section on Replacing CompactFlash Memory Cards Installing Sdram DIMMsReplacing the Cover on a Cisco 3725 Router Replacing the Cisco 3725 CoverUpgrading System Memory in Cisco 3745 Routers Replacing Connections to the RouterRemoving the Cisco 3745 Mainboard Tray Captive Screws on a Cisco 3745 Router Removing the Front Panel from a Cisco 3745 Router Sdram Sodimm Location and Orientation Replacing Cisco 3745 SdramSdramm Sodimm Location in the Cisco 3745 Router Removing Sdram SODIMMsInstalling Sdram SODIMMs Proceed to Replacing the Cisco 3745 Mainboard section on Inserting the Mainboard into a Cisco 3745 Router Replacing the Cisco 3745 MainboardInstalling the Front Panel on a Cisco 3745 Router Reinstall the chassis on a rack or desktop Using the xmodem Command Obtaining DocumentationCisco.com Cisco Technical Support Website Documentation FeedbackObtaining Technical Assistance Ordering DocumentationSubmitting a Service Request Definitions of Service Request SeverityObtaining Additional Publications and Information Obtaining Additional Publications and Information

3745 Series, 3725 Series, 3600 Series specifications

Cisco Systems has a long-standing reputation in the networking industry, and its series of routers, notably the 3725, 3600, and 3745, epitomize the company’s commitment to delivering high-performance solutions. This article delves into the main features, technologies, and characteristics that define these router series.

The Cisco 3725 Series, introduced as part of the 3700 series, is designed to offer a reliable platform for medium-sized enterprises. It supports various network functionality, including advanced routing protocols such as RIP, EIGRP, and BGP. The 3725 features a modular design that allows for easy scalability and customization. With support for voice, video, and data applications, it also enables various WAN interfaces, including T1/E1, DSL, and Frame Relay. The integration of security features, such as firewall capabilities and VPN support, makes the 3725 a robust choice for organizations looking to enhance their network security.

In the same family, the Cisco 3600 Series serves as a versatile option suited for branch offices and enterprise environments. Renowned for its flexibility, the 3600 supports numerous networking modules, making it adaptable to changing needs. Its high-density interface options, including serial, Ethernet, and ISDN interfaces, allow for seamless connectivity to different types of networks. Additionally, the 3600 provides strong support for voice-over-IP (VoIP) applications, thus making it popular among businesses that wish to unify their communication services.

The Cisco 3745 Series builds upon the strengths of its predecessors with increased performance and additional features. It integrates VoIP capabilities, ensuring a high-quality experience for voice communications over data networks. With enhanced encryption options and advanced security measures, the 3745 is tailored for organizations with heightened security requirements. The router supports a wide range of applications, including web hosting and remote access services. Furthermore, its ability to incorporate various modules, such as interface cards and voice cards, results in a highly customizable networking solution.

Overall, Cisco's 3725, 3600, and 3745 Series routers exemplify the balance of performance, reliability, and flexibility. Designed to meet the demands of medium and large enterprises, these routers provide essential features like modularity, scalable interfaces, strong security, and support for various applications. Each series offers unique advantages, allowing organizations to select the most suitable solution based on their specific needs. As networking technology continues to evolve, these routers remain relevant, helping businesses adapt to changing landscapes.
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